std 8 social science ch 19 swadhyay solution , dhoran 8 samajik vigyan swadhyay ch 19 , Std 8 new book

2/3 : 19/29 : 8/7 : ?

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

The number of hours and minutes from 6:19 am to 8:19 pm on same day is

Find the median of the data set 1.9, 8.4, 3.6, 5.8

Class 10 Social Science| Democratic Politics Chapter 8 | Challenges of Democracy | Important Questions | Quick Revision

Class 10 Social Science| Democratic Politics Chapter 8 | Challenges to Democracy | Important Questions | Quick Revision Part 2

Calculate the pH at the equivalence point when a solution of 0.1 M CH_3COOH is titrated with a solution of 0.1 M NaOH. K_a(CH_3COOH)= 1.8 xx 10^(-5)

The number of hours and minutes from 6 : 19 am to 8 : 19 pm on same day is